215312500

素因数分解:

$2^2\times 5^7\times {\mathrm{13}}^1\times {\mathrm{53}}^1$

素因数の和:105

約数の個数: 96

約数和(自身を含む): 516795552

約数和(自身を除く): 301483052

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 53, 65, 100, 106, 125, 130, 212, 250, 260, 265, 325, 500, 530, 625, 650, 689, 1060, 1250, 1300, 1325, 1378, 1625, 2500, 2650, 2756, 3125, 3250, 3445, 5300, 6250, 6500, 6625, 6890, 8125, 12500, 13250, 13780, 15625, 16250, 17225, 26500, 31250, 32500, 33125, 34450, 40625, 62500, 66250, 68900, 78125, 81250, 86125, 132500, 156250, 162500, 165625, 172250, 203125, 312500, 331250, 344500, 406250, 430625, 662500, 812500, 828125, 861250, 1015625, 1656250, 1722500, 2031250, 2153125, 3312500, 4062500, 4140625, 4306250, 8281250, 8612500, 10765625, 16562500, 21531250, 43062500, 53828125, 107656250, 215312500]

約数ペア:

[(1, 215312500), (2, 107656250), (4, 53828125), (5, 43062500), (10, 21531250), (13, 16562500), (20, 10765625), (25, 8612500), (26, 8281250), (50, 4306250), (52, 4140625), (53, 4062500), (65, 3312500), (100, 2153125), (106, 2031250), (125, 1722500), (130, 1656250), (212, 1015625), (250, 861250), (260, 828125), (265, 812500), (325, 662500), (500, 430625), (530, 406250), (625, 344500), (650, 331250), (689, 312500), (1060, 203125), (1250, 172250), (1300, 165625), (1325, 162500), (1378, 156250), (1625, 132500), (2500, 86125), (2650, 81250), (2756, 78125), (3125, 68900), (3250, 66250), (3445, 62500), (5300, 40625), (6250, 34450), (6500, 33125), (6625, 32500), (6890, 31250), (8125, 26500), (12500, 17225), (13250, 16250), (13780, 15625)]