20853846730

素因数分解:

$2^1\times 5^1\times {\mathrm{101}}^1\times {\mathrm{163}}^1\times {\mathrm{197}}^1\times {\mathrm{643}}^1$

素因数の和:1111

約数の個数: 64

約数和(自身を含む): 38394373248

約数和(自身を除く): 17540526518

約数列:

[1, 2, 5, 10, 101, 163, 197, 202, 326, 394, 505, 643, 815, 985, 1010, 1286, 1630, 1970, 3215, 6430, 16463, 19897, 32111, 32926, 39794, 64222, 64943, 82315, 99485, 104809, 126671, 129886, 160555, 164630, 198970, 209618, 253342, 321110, 324715, 524045, 633355, 649430, 1048090, 1266710, 3243211, 6486422, 10585709, 12793771, 16216055, 20647373, 21171418, 25587542, 32432110, 41294746, 52928545, 63968855, 103236865, 105857090, 127937710, 206473730, 2085384673, 4170769346, 10426923365, 20853846730]

約数ペア:

[(1, 20853846730), (2, 10426923365), (5, 4170769346), (10, 2085384673), (101, 206473730), (163, 127937710), (197, 105857090), (202, 103236865), (326, 63968855), (394, 52928545), (505, 41294746), (643, 32432110), (815, 25587542), (985, 21171418), (1010, 20647373), (1286, 16216055), (1630, 12793771), (1970, 10585709), (3215, 6486422), (6430, 3243211), (16463, 1266710), (19897, 1048090), (32111, 649430), (32926, 633355), (39794, 524045), (64222, 324715), (64943, 321110), (82315, 253342), (99485, 209618), (104809, 198970), (126671, 164630), (129886, 160555)]