21152981590

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{2667463}}^1$

素因数の和:2667544

約数の個数: 32

約数和(自身を含む): 41676457536

約数和(自身を除く): 20523475946

約数列:

[1, 2, 5, 10, 13, 26, 61, 65, 122, 130, 305, 610, 793, 1586, 3965, 7930, 2667463, 5334926, 13337315, 26674630, 34677019, 69354038, 162715243, 173385095, 325430486, 346770190, 813576215, 1627152430, 2115298159, 4230596318, 10576490795, 21152981590]

約数ペア:

[(1, 21152981590), (2, 10576490795), (5, 4230596318), (10, 2115298159), (13, 1627152430), (26, 813576215), (61, 346770190), (65, 325430486), (122, 173385095), (130, 162715243), (305, 69354038), (610, 34677019), (793, 26674630), (1586, 13337315), (3965, 5334926), (7930, 2667463)]