21211920

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{1733}}^1$

素因数の和:1769

約数の個数: 120

約数和(自身を含む): 75470616

約数和(自身を除く): 54258696

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 17, 18, 20, 24, 30, 34, 36, 40, 45, 48, 51, 60, 68, 72, 80, 85, 90, 102, 120, 136, 144, 153, 170, 180, 204, 240, 255, 272, 306, 340, 360, 408, 510, 612, 680, 720, 765, 816, 1020, 1224, 1360, 1530, 1733, 2040, 2448, 3060, 3466, 4080, 5199, 6120, 6932, 8665, 10398, 12240, 13864, 15597, 17330, 20796, 25995, 27728, 29461, 31194, 34660, 41592, 51990, 58922, 62388, 69320, 77985, 83184, 88383, 103980, 117844, 124776, 138640, 147305, 155970, 176766, 207960, 235688, 249552, 265149, 294610, 311940, 353532, 415920, 441915, 471376, 530298, 589220, 623880, 707064, 883830, 1060596, 1178440, 1247760, 1325745, 1414128, 1767660, 2121192, 2356880, 2651490, 3535320, 4242384, 5302980, 7070640, 10605960, 21211920]

約数ペア:

[(1, 21211920), (2, 10605960), (3, 7070640), (4, 5302980), (5, 4242384), (6, 3535320), (8, 2651490), (9, 2356880), (10, 2121192), (12, 1767660), (15, 1414128), (16, 1325745), (17, 1247760), (18, 1178440), (20, 1060596), (24, 883830), (30, 707064), (34, 623880), (36, 589220), (40, 530298), (45, 471376), (48, 441915), (51, 415920), (60, 353532), (68, 311940), (72, 294610), (80, 265149), (85, 249552), (90, 235688), (102, 207960), (120, 176766), (136, 155970), (144, 147305), (153, 138640), (170, 124776), (180, 117844), (204, 103980), (240, 88383), (255, 83184), (272, 77985), (306, 69320), (340, 62388), (360, 58922), (408, 51990), (510, 41592), (612, 34660), (680, 31194), (720, 29461), (765, 27728), (816, 25995), (1020, 20796), (1224, 17330), (1360, 15597), (1530, 13864), (1733, 12240), (2040, 10398), (2448, 8665), (3060, 6932), (3466, 6120), (4080, 5199)]