405906540

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{520393}}^1$

素因数の和:520418

約数の個数: 48

約数和(自身を含む): 1223966688

約数和(自身を除く): 818060148

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 520393, 1040786, 1561179, 2081572, 2601965, 3122358, 5203930, 6244716, 6765109, 7805895, 10407860, 13530218, 15611790, 20295327, 27060436, 31223580, 33825545, 40590654, 67651090, 81181308, 101476635, 135302180, 202953270, 405906540]

約数ペア:

[(1, 405906540), (2, 202953270), (3, 135302180), (4, 101476635), (5, 81181308), (6, 67651090), (10, 40590654), (12, 33825545), (13, 31223580), (15, 27060436), (20, 20295327), (26, 15611790), (30, 13530218), (39, 10407860), (52, 7805895), (60, 6765109), (65, 6244716), (78, 5203930), (130, 3122358), (156, 2601965), (195, 2081572), (260, 1561179), (390, 1040786), (780, 520393)]