20476984

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{331}}^1$

素因数の和:404

約数の個数: 64

約数和(自身を含む): 45417600

約数和(自身を除く): 24940616

約数列:

[1, 2, 4, 8, 11, 19, 22, 37, 38, 44, 74, 76, 88, 148, 152, 209, 296, 331, 407, 418, 662, 703, 814, 836, 1324, 1406, 1628, 1672, 2648, 2812, 3256, 3641, 5624, 6289, 7282, 7733, 12247, 12578, 14564, 15466, 24494, 25156, 29128, 30932, 48988, 50312, 61864, 69179, 97976, 134717, 138358, 232693, 269434, 276716, 465386, 538868, 553432, 930772, 1077736, 1861544, 2559623, 5119246, 10238492, 20476984]

約数ペア:

[(1, 20476984), (2, 10238492), (4, 5119246), (8, 2559623), (11, 1861544), (19, 1077736), (22, 930772), (37, 553432), (38, 538868), (44, 465386), (74, 276716), (76, 269434), (88, 232693), (148, 138358), (152, 134717), (209, 97976), (296, 69179), (331, 61864), (407, 50312), (418, 48988), (662, 30932), (703, 29128), (814, 25156), (836, 24494), (1324, 15466), (1406, 14564), (1628, 12578), (1672, 12247), (2648, 7733), (2812, 7282), (3256, 6289), (3641, 5624)]