28175900

素因数分解:

$2^2\times 5^2\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{149}}^1$

素因数の和:255

約数の個数: 72

約数和(自身を含む): 64579200

約数和(自身を除く): 36403300

約数列:

[1, 2, 4, 5, 10, 20, 25, 31, 50, 61, 62, 100, 122, 124, 149, 155, 244, 298, 305, 310, 596, 610, 620, 745, 775, 1220, 1490, 1525, 1550, 1891, 2980, 3050, 3100, 3725, 3782, 4619, 6100, 7450, 7564, 9089, 9238, 9455, 14900, 18178, 18476, 18910, 23095, 36356, 37820, 45445, 46190, 47275, 90890, 92380, 94550, 115475, 181780, 189100, 227225, 230950, 281759, 454450, 461900, 563518, 908900, 1127036, 1408795, 2817590, 5635180, 7043975, 14087950, 28175900]

約数ペア:

[(1, 28175900), (2, 14087950), (4, 7043975), (5, 5635180), (10, 2817590), (20, 1408795), (25, 1127036), (31, 908900), (50, 563518), (61, 461900), (62, 454450), (100, 281759), (122, 230950), (124, 227225), (149, 189100), (155, 181780), (244, 115475), (298, 94550), (305, 92380), (310, 90890), (596, 47275), (610, 46190), (620, 45445), (745, 37820), (775, 36356), (1220, 23095), (1490, 18910), (1525, 18476), (1550, 18178), (1891, 14900), (2980, 9455), (3050, 9238), (3100, 9089), (3725, 7564), (3782, 7450), (4619, 6100)]