421775500

素因数分解:

$2^2\times 5^3\times {\mathrm{71}}^1\times {\mathrm{109}}^2$

素因数の和:308

約数の個数: 72

約数和(自身を含む): 942780384

約数和(自身を除く): 521004884

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 71, 100, 109, 125, 142, 218, 250, 284, 355, 436, 500, 545, 710, 1090, 1420, 1775, 2180, 2725, 3550, 5450, 7100, 7739, 8875, 10900, 11881, 13625, 15478, 17750, 23762, 27250, 30956, 35500, 38695, 47524, 54500, 59405, 77390, 118810, 154780, 193475, 237620, 297025, 386950, 594050, 773900, 843551, 967375, 1188100, 1485125, 1687102, 1934750, 2970250, 3374204, 3869500, 4217755, 5940500, 8435510, 16871020, 21088775, 42177550, 84355100, 105443875, 210887750, 421775500]

約数ペア:

[(1, 421775500), (2, 210887750), (4, 105443875), (5, 84355100), (10, 42177550), (20, 21088775), (25, 16871020), (50, 8435510), (71, 5940500), (100, 4217755), (109, 3869500), (125, 3374204), (142, 2970250), (218, 1934750), (250, 1687102), (284, 1485125), (355, 1188100), (436, 967375), (500, 843551), (545, 773900), (710, 594050), (1090, 386950), (1420, 297025), (1775, 237620), (2180, 193475), (2725, 154780), (3550, 118810), (5450, 77390), (7100, 59405), (7739, 54500), (8875, 47524), (10900, 38695), (11881, 35500), (13625, 30956), (15478, 27250), (17750, 23762)]