21386970

素因数分解:

$2^1\times 3^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{379}}^1$

素因数の和:425

約数の個数: 128

約数和(自身を含む): 65664000

約数和(自身を除く): 44277030

約数列:

[1, 2, 3, 5, 6, 9, 10, 11, 15, 18, 19, 22, 27, 30, 33, 38, 45, 54, 55, 57, 66, 90, 95, 99, 110, 114, 135, 165, 171, 190, 198, 209, 270, 285, 297, 330, 342, 379, 418, 495, 513, 570, 594, 627, 758, 855, 990, 1026, 1045, 1137, 1254, 1485, 1710, 1881, 1895, 2090, 2274, 2565, 2970, 3135, 3411, 3762, 3790, 4169, 5130, 5643, 5685, 6270, 6822, 7201, 8338, 9405, 10233, 11286, 11370, 12507, 14402, 17055, 18810, 20466, 20845, 21603, 25014, 28215, 34110, 36005, 37521, 41690, 43206, 51165, 56430, 62535, 64809, 72010, 75042, 79211, 102330, 108015, 112563, 125070, 129618, 158422, 187605, 194427, 216030, 225126, 237633, 324045, 375210, 388854, 396055, 475266, 562815, 648090, 712899, 792110, 972135, 1125630, 1188165, 1425798, 1944270, 2138697, 2376330, 3564495, 4277394, 7128990, 10693485, 21386970]

約数ペア:

[(1, 21386970), (2, 10693485), (3, 7128990), (5, 4277394), (6, 3564495), (9, 2376330), (10, 2138697), (11, 1944270), (15, 1425798), (18, 1188165), (19, 1125630), (22, 972135), (27, 792110), (30, 712899), (33, 648090), (38, 562815), (45, 475266), (54, 396055), (55, 388854), (57, 375210), (66, 324045), (90, 237633), (95, 225126), (99, 216030), (110, 194427), (114, 187605), (135, 158422), (165, 129618), (171, 125070), (190, 112563), (198, 108015), (209, 102330), (270, 79211), (285, 75042), (297, 72010), (330, 64809), (342, 62535), (379, 56430), (418, 51165), (495, 43206), (513, 41690), (570, 37521), (594, 36005), (627, 34110), (758, 28215), (855, 25014), (990, 21603), (1026, 20845), (1045, 20466), (1137, 18810), (1254, 17055), (1485, 14402), (1710, 12507), (1881, 11370), (1895, 11286), (2090, 10233), (2274, 9405), (2565, 8338), (2970, 7201), (3135, 6822), (3411, 6270), (3762, 5685), (3790, 5643), (4169, 5130)]