19840860

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{139}}^1$

素因数の和:228

約数の個数: 144

約数和(自身を含む): 66349920

約数和(自身を除く): 46509060

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 26, 30, 36, 39, 45, 52, 60, 61, 65, 78, 90, 117, 122, 130, 139, 156, 180, 183, 195, 234, 244, 260, 278, 305, 366, 390, 417, 468, 549, 556, 585, 610, 695, 732, 780, 793, 834, 915, 1098, 1170, 1220, 1251, 1390, 1586, 1668, 1807, 1830, 2085, 2196, 2340, 2379, 2502, 2745, 2780, 3172, 3614, 3660, 3965, 4170, 4758, 5004, 5421, 5490, 6255, 7137, 7228, 7930, 8340, 8479, 9035, 9516, 10842, 10980, 11895, 12510, 14274, 15860, 16263, 16958, 18070, 21684, 23790, 25020, 25437, 27105, 28548, 32526, 33916, 35685, 36140, 42395, 47580, 50874, 54210, 65052, 71370, 76311, 81315, 84790, 101748, 108420, 110227, 127185, 142740, 152622, 162630, 169580, 220454, 254370, 305244, 325260, 330681, 381555, 440908, 508740, 551135, 661362, 763110, 992043, 1102270, 1322724, 1526220, 1653405, 1984086, 2204540, 3306810, 3968172, 4960215, 6613620, 9920430, 19840860]

約数ペア:

[(1, 19840860), (2, 9920430), (3, 6613620), (4, 4960215), (5, 3968172), (6, 3306810), (9, 2204540), (10, 1984086), (12, 1653405), (13, 1526220), (15, 1322724), (18, 1102270), (20, 992043), (26, 763110), (30, 661362), (36, 551135), (39, 508740), (45, 440908), (52, 381555), (60, 330681), (61, 325260), (65, 305244), (78, 254370), (90, 220454), (117, 169580), (122, 162630), (130, 152622), (139, 142740), (156, 127185), (180, 110227), (183, 108420), (195, 101748), (234, 84790), (244, 81315), (260, 76311), (278, 71370), (305, 65052), (366, 54210), (390, 50874), (417, 47580), (468, 42395), (549, 36140), (556, 35685), (585, 33916), (610, 32526), (695, 28548), (732, 27105), (780, 25437), (793, 25020), (834, 23790), (915, 21684), (1098, 18070), (1170, 16958), (1220, 16263), (1251, 15860), (1390, 14274), (1586, 12510), (1668, 11895), (1807, 10980), (1830, 10842), (2085, 9516), (2196, 9035), (2340, 8479), (2379, 8340), (2502, 7930), (2745, 7228), (2780, 7137), (3172, 6255), (3614, 5490), (3660, 5421), (3965, 5004), (4170, 4758)]