20895720

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{10243}}^1$

素因数の和:10274

約数の個数: 64

約数和(自身を含む): 66381120

約数和(自身を除く): 45485400

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 17, 20, 24, 30, 34, 40, 51, 60, 68, 85, 102, 120, 136, 170, 204, 255, 340, 408, 510, 680, 1020, 2040, 10243, 20486, 30729, 40972, 51215, 61458, 81944, 102430, 122916, 153645, 174131, 204860, 245832, 307290, 348262, 409720, 522393, 614580, 696524, 870655, 1044786, 1229160, 1393048, 1741310, 2089572, 2611965, 3482620, 4179144, 5223930, 6965240, 10447860, 20895720]

約数ペア:

[(1, 20895720), (2, 10447860), (3, 6965240), (4, 5223930), (5, 4179144), (6, 3482620), (8, 2611965), (10, 2089572), (12, 1741310), (15, 1393048), (17, 1229160), (20, 1044786), (24, 870655), (30, 696524), (34, 614580), (40, 522393), (51, 409720), (60, 348262), (68, 307290), (85, 245832), (102, 204860), (120, 174131), (136, 153645), (170, 122916), (204, 102430), (255, 81944), (340, 61458), (408, 51215), (510, 40972), (680, 30729), (1020, 20486), (2040, 10243)]