20575440

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{41}}^2$

素因数の和:118

約数の個数: 180

約数和(自身を含む): 74991852

約数和(自身を除く): 54416412

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 17, 18, 20, 24, 30, 34, 36, 40, 41, 45, 48, 51, 60, 68, 72, 80, 82, 85, 90, 102, 120, 123, 136, 144, 153, 164, 170, 180, 204, 205, 240, 246, 255, 272, 306, 328, 340, 360, 369, 408, 410, 492, 510, 612, 615, 656, 680, 697, 720, 738, 765, 816, 820, 984, 1020, 1224, 1230, 1360, 1394, 1476, 1530, 1640, 1681, 1845, 1968, 2040, 2091, 2448, 2460, 2788, 2952, 3060, 3280, 3362, 3485, 3690, 4080, 4182, 4920, 5043, 5576, 5904, 6120, 6273, 6724, 6970, 7380, 8364, 8405, 9840, 10086, 10455, 11152, 12240, 12546, 13448, 13940, 14760, 15129, 16728, 16810, 20172, 20910, 25092, 25215, 26896, 27880, 28577, 29520, 30258, 31365, 33456, 33620, 40344, 41820, 50184, 50430, 55760, 57154, 60516, 62730, 67240, 75645, 80688, 83640, 85731, 100368, 100860, 114308, 121032, 125460, 134480, 142885, 151290, 167280, 171462, 201720, 228616, 242064, 250920, 257193, 285770, 302580, 342924, 403440, 428655, 457232, 501840, 514386, 571540, 605160, 685848, 857310, 1028772, 1143080, 1210320, 1285965, 1371696, 1714620, 2057544, 2286160, 2571930, 3429240, 4115088, 5143860, 6858480, 10287720, 20575440]

約数ペア:

[(1, 20575440), (2, 10287720), (3, 6858480), (4, 5143860), (5, 4115088), (6, 3429240), (8, 2571930), (9, 2286160), (10, 2057544), (12, 1714620), (15, 1371696), (16, 1285965), (17, 1210320), (18, 1143080), (20, 1028772), (24, 857310), (30, 685848), (34, 605160), (36, 571540), (40, 514386), (41, 501840), (45, 457232), (48, 428655), (51, 403440), (60, 342924), (68, 302580), (72, 285770), (80, 257193), (82, 250920), (85, 242064), (90, 228616), (102, 201720), (120, 171462), (123, 167280), (136, 151290), (144, 142885), (153, 134480), (164, 125460), (170, 121032), (180, 114308), (204, 100860), (205, 100368), (240, 85731), (246, 83640), (255, 80688), (272, 75645), (306, 67240), (328, 62730), (340, 60516), (360, 57154), (369, 55760), (408, 50430), (410, 50184), (492, 41820), (510, 40344), (612, 33620), (615, 33456), (656, 31365), (680, 30258), (697, 29520), (720, 28577), (738, 27880), (765, 26896), (816, 25215), (820, 25092), (984, 20910), (1020, 20172), (1224, 16810), (1230, 16728), (1360, 15129), (1394, 14760), (1476, 13940), (1530, 13448), (1640, 12546), (1681, 12240), (1845, 11152), (1968, 10455), (2040, 10086), (2091, 9840), (2448, 8405), (2460, 8364), (2788, 7380), (2952, 6970), (3060, 6724), (3280, 6273), (3362, 6120), (3485, 5904), (3690, 5576), (4080, 5043), (4182, 4920)]