20879480

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{83}}^1\times {\mathrm{331}}^1$

素因数の和:444

約数の個数: 64

約数和(自身を含む): 50198400

約数和(自身を除く): 29318920

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 83, 95, 152, 166, 190, 331, 332, 380, 415, 662, 664, 760, 830, 1324, 1577, 1655, 1660, 2648, 3154, 3310, 3320, 6289, 6308, 6620, 7885, 12578, 12616, 13240, 15770, 25156, 27473, 31445, 31540, 50312, 54946, 62890, 63080, 109892, 125780, 137365, 219784, 251560, 274730, 521987, 549460, 1043974, 1098920, 2087948, 2609935, 4175896, 5219870, 10439740, 20879480]

約数ペア:

[(1, 20879480), (2, 10439740), (4, 5219870), (5, 4175896), (8, 2609935), (10, 2087948), (19, 1098920), (20, 1043974), (38, 549460), (40, 521987), (76, 274730), (83, 251560), (95, 219784), (152, 137365), (166, 125780), (190, 109892), (331, 63080), (332, 62890), (380, 54946), (415, 50312), (662, 31540), (664, 31445), (760, 27473), (830, 25156), (1324, 15770), (1577, 13240), (1655, 12616), (1660, 12578), (2648, 7885), (3154, 6620), (3310, 6308), (3320, 6289)]