21307650

素因数分解:

$2^1\times 3^1\times 5^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{223}}^1$

素因数の和:265

約数の個数: 144

約数和(自身を含む): 66495744

約数和(自身を除く): 45188094

約数列:

[1, 2, 3, 5, 6, 7, 10, 13, 14, 15, 21, 25, 26, 30, 35, 39, 42, 49, 50, 65, 70, 75, 78, 91, 98, 105, 130, 147, 150, 175, 182, 195, 210, 223, 245, 273, 294, 325, 350, 390, 446, 455, 490, 525, 546, 637, 650, 669, 735, 910, 975, 1050, 1115, 1225, 1274, 1338, 1365, 1470, 1561, 1911, 1950, 2230, 2275, 2450, 2730, 2899, 3122, 3185, 3345, 3675, 3822, 4550, 4683, 5575, 5798, 6370, 6690, 6825, 7350, 7805, 8697, 9366, 9555, 10927, 11150, 13650, 14495, 15610, 15925, 16725, 17394, 19110, 20293, 21854, 23415, 28990, 31850, 32781, 33450, 39025, 40586, 43485, 46830, 47775, 54635, 60879, 65562, 72475, 78050, 86970, 95550, 101465, 109270, 117075, 121758, 142051, 144950, 163905, 202930, 217425, 234150, 273175, 284102, 304395, 327810, 426153, 434850, 507325, 546350, 608790, 710255, 819525, 852306, 1014650, 1420510, 1521975, 1639050, 2130765, 3043950, 3551275, 4261530, 7102550, 10653825, 21307650]

約数ペア:

[(1, 21307650), (2, 10653825), (3, 7102550), (5, 4261530), (6, 3551275), (7, 3043950), (10, 2130765), (13, 1639050), (14, 1521975), (15, 1420510), (21, 1014650), (25, 852306), (26, 819525), (30, 710255), (35, 608790), (39, 546350), (42, 507325), (49, 434850), (50, 426153), (65, 327810), (70, 304395), (75, 284102), (78, 273175), (91, 234150), (98, 217425), (105, 202930), (130, 163905), (147, 144950), (150, 142051), (175, 121758), (182, 117075), (195, 109270), (210, 101465), (223, 95550), (245, 86970), (273, 78050), (294, 72475), (325, 65562), (350, 60879), (390, 54635), (446, 47775), (455, 46830), (490, 43485), (525, 40586), (546, 39025), (637, 33450), (650, 32781), (669, 31850), (735, 28990), (910, 23415), (975, 21854), (1050, 20293), (1115, 19110), (1225, 17394), (1274, 16725), (1338, 15925), (1365, 15610), (1470, 14495), (1561, 13650), (1911, 11150), (1950, 10927), (2230, 9555), (2275, 9366), (2450, 8697), (2730, 7805), (2899, 7350), (3122, 6825), (3185, 6690), (3345, 6370), (3675, 5798), (3822, 5575), (4550, 4683)]