20747220

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{397}}^1$

素因数の和:489

約数の個数: 96

約数和(自身を含む): 63654528

約数和(自身を除く): 42907308

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 67, 78, 130, 134, 156, 195, 201, 260, 268, 335, 390, 397, 402, 670, 780, 794, 804, 871, 1005, 1191, 1340, 1588, 1742, 1985, 2010, 2382, 2613, 3484, 3970, 4020, 4355, 4764, 5161, 5226, 5955, 7940, 8710, 10322, 10452, 11910, 13065, 15483, 17420, 20644, 23820, 25805, 26130, 26599, 30966, 51610, 52260, 53198, 61932, 77415, 79797, 103220, 106396, 132995, 154830, 159594, 265990, 309660, 319188, 345787, 398985, 531980, 691574, 797970, 1037361, 1383148, 1595940, 1728935, 2074722, 3457870, 4149444, 5186805, 6915740, 10373610, 20747220]

約数ペア:

[(1, 20747220), (2, 10373610), (3, 6915740), (4, 5186805), (5, 4149444), (6, 3457870), (10, 2074722), (12, 1728935), (13, 1595940), (15, 1383148), (20, 1037361), (26, 797970), (30, 691574), (39, 531980), (52, 398985), (60, 345787), (65, 319188), (67, 309660), (78, 265990), (130, 159594), (134, 154830), (156, 132995), (195, 106396), (201, 103220), (260, 79797), (268, 77415), (335, 61932), (390, 53198), (397, 52260), (402, 51610), (670, 30966), (780, 26599), (794, 26130), (804, 25805), (871, 23820), (1005, 20644), (1191, 17420), (1340, 15483), (1588, 13065), (1742, 11910), (1985, 10452), (2010, 10322), (2382, 8710), (2613, 7940), (3484, 5955), (3970, 5226), (4020, 5161), (4355, 4764)]