21940291280

素因数分解:

$2^4\times 5^1\times {\mathrm{53}}^1\times {\mathrm{199}}^1\times {\mathrm{26003}}^1$

素因数の和:26268

約数の個数: 80

約数和(自身を含む): 52236835200

約数和(自身を除く): 30296543920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 53, 80, 106, 199, 212, 265, 398, 424, 530, 796, 848, 995, 1060, 1592, 1990, 2120, 3184, 3980, 4240, 7960, 10547, 15920, 21094, 26003, 42188, 52006, 52735, 84376, 104012, 105470, 130015, 168752, 208024, 210940, 260030, 416048, 421880, 520060, 843760, 1040120, 1378159, 2080240, 2756318, 5174597, 5512636, 6890795, 10349194, 11025272, 13781590, 20698388, 22050544, 25872985, 27563180, 41396776, 51745970, 55126360, 82793552, 103491940, 110252720, 206983880, 274253641, 413967760, 548507282, 1097014564, 1371268205, 2194029128, 2742536410, 4388058256, 5485072820, 10970145640, 21940291280]

約数ペア:

[(1, 21940291280), (2, 10970145640), (4, 5485072820), (5, 4388058256), (8, 2742536410), (10, 2194029128), (16, 1371268205), (20, 1097014564), (40, 548507282), (53, 413967760), (80, 274253641), (106, 206983880), (199, 110252720), (212, 103491940), (265, 82793552), (398, 55126360), (424, 51745970), (530, 41396776), (796, 27563180), (848, 25872985), (995, 22050544), (1060, 20698388), (1592, 13781590), (1990, 11025272), (2120, 10349194), (3184, 6890795), (3980, 5512636), (4240, 5174597), (7960, 2756318), (10547, 2080240), (15920, 1378159), (21094, 1040120), (26003, 843760), (42188, 520060), (52006, 421880), (52735, 416048), (84376, 260030), (104012, 210940), (105470, 208024), (130015, 168752)]