19805280

素因数分解:

$2^5\times 3^1\times 5^1\times {\mathrm{11}}^3\times {\mathrm{31}}^1$

素因数の和:82

約数の個数: 192

約数和(自身を含む): 70834176

約数和(自身を除く): 51028896

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 16, 20, 22, 24, 30, 31, 32, 33, 40, 44, 48, 55, 60, 62, 66, 80, 88, 93, 96, 110, 120, 121, 124, 132, 155, 160, 165, 176, 186, 220, 240, 242, 248, 264, 310, 330, 341, 352, 363, 372, 440, 465, 480, 484, 496, 528, 605, 620, 660, 682, 726, 744, 880, 930, 968, 992, 1023, 1056, 1210, 1240, 1320, 1331, 1364, 1452, 1488, 1705, 1760, 1815, 1860, 1936, 2046, 2420, 2480, 2640, 2662, 2728, 2904, 2976, 3410, 3630, 3720, 3751, 3872, 3993, 4092, 4840, 4960, 5115, 5280, 5324, 5456, 5808, 6655, 6820, 7260, 7440, 7502, 7986, 8184, 9680, 10230, 10648, 10912, 11253, 11616, 13310, 13640, 14520, 14880, 15004, 15972, 16368, 18755, 19360, 19965, 20460, 21296, 22506, 26620, 27280, 29040, 30008, 31944, 32736, 37510, 39930, 40920, 41261, 42592, 45012, 53240, 54560, 56265, 58080, 60016, 63888, 75020, 79860, 81840, 82522, 90024, 106480, 112530, 120032, 123783, 127776, 150040, 159720, 163680, 165044, 180048, 206305, 212960, 225060, 247566, 300080, 319440, 330088, 360096, 412610, 450120, 495132, 600160, 618915, 638880, 660176, 825220, 900240, 990264, 1237830, 1320352, 1650440, 1800480, 1980528, 2475660, 3300880, 3961056, 4951320, 6601760, 9902640, 19805280]

約数ペア:

[(1, 19805280), (2, 9902640), (3, 6601760), (4, 4951320), (5, 3961056), (6, 3300880), (8, 2475660), (10, 1980528), (11, 1800480), (12, 1650440), (15, 1320352), (16, 1237830), (20, 990264), (22, 900240), (24, 825220), (30, 660176), (31, 638880), (32, 618915), (33, 600160), (40, 495132), (44, 450120), (48, 412610), (55, 360096), (60, 330088), (62, 319440), (66, 300080), (80, 247566), (88, 225060), (93, 212960), (96, 206305), (110, 180048), (120, 165044), (121, 163680), (124, 159720), (132, 150040), (155, 127776), (160, 123783), (165, 120032), (176, 112530), (186, 106480), (220, 90024), (240, 82522), (242, 81840), (248, 79860), (264, 75020), (310, 63888), (330, 60016), (341, 58080), (352, 56265), (363, 54560), (372, 53240), (440, 45012), (465, 42592), (480, 41261), (484, 40920), (496, 39930), (528, 37510), (605, 32736), (620, 31944), (660, 30008), (682, 29040), (726, 27280), (744, 26620), (880, 22506), (930, 21296), (968, 20460), (992, 19965), (1023, 19360), (1056, 18755), (1210, 16368), (1240, 15972), (1320, 15004), (1331, 14880), (1364, 14520), (1452, 13640), (1488, 13310), (1705, 11616), (1760, 11253), (1815, 10912), (1860, 10648), (1936, 10230), (2046, 9680), (2420, 8184), (2480, 7986), (2640, 7502), (2662, 7440), (2728, 7260), (2904, 6820), (2976, 6655), (3410, 5808), (3630, 5456), (3720, 5324), (3751, 5280), (3872, 5115), (3993, 4960), (4092, 4840)]