19614920

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{563}}^1$

素因数の和:654

約数の個数: 64

約数和(自身を含む): 48323520

約数和(自身を除く): 28708600

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 67, 104, 130, 134, 260, 268, 335, 520, 536, 563, 670, 871, 1126, 1340, 1742, 2252, 2680, 2815, 3484, 4355, 4504, 5630, 6968, 7319, 8710, 11260, 14638, 17420, 22520, 29276, 34840, 36595, 37721, 58552, 73190, 75442, 146380, 150884, 188605, 292760, 301768, 377210, 490373, 754420, 980746, 1508840, 1961492, 2451865, 3922984, 4903730, 9807460, 19614920]

約数ペア:

[(1, 19614920), (2, 9807460), (4, 4903730), (5, 3922984), (8, 2451865), (10, 1961492), (13, 1508840), (20, 980746), (26, 754420), (40, 490373), (52, 377210), (65, 301768), (67, 292760), (104, 188605), (130, 150884), (134, 146380), (260, 75442), (268, 73190), (335, 58552), (520, 37721), (536, 36595), (563, 34840), (670, 29276), (871, 22520), (1126, 17420), (1340, 14638), (1742, 11260), (2252, 8710), (2680, 7319), (2815, 6968), (3484, 5630), (4355, 4504)]