78731820

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{23021}}^1$

素因数の和:23055

約数の個数: 72

約数和(自身を含む): 251400240

約数和(自身を除く): 172668420

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 19, 20, 30, 36, 38, 45, 57, 60, 76, 90, 95, 114, 171, 180, 190, 228, 285, 342, 380, 570, 684, 855, 1140, 1710, 3420, 23021, 46042, 69063, 92084, 115105, 138126, 207189, 230210, 276252, 345315, 414378, 437399, 460420, 690630, 828756, 874798, 1035945, 1312197, 1381260, 1749596, 2071890, 2186995, 2624394, 3936591, 4143780, 4373990, 5248788, 6560985, 7873182, 8747980, 13121970, 15746364, 19682955, 26243940, 39365910, 78731820]

約数ペア:

[(1, 78731820), (2, 39365910), (3, 26243940), (4, 19682955), (5, 15746364), (6, 13121970), (9, 8747980), (10, 7873182), (12, 6560985), (15, 5248788), (18, 4373990), (19, 4143780), (20, 3936591), (30, 2624394), (36, 2186995), (38, 2071890), (45, 1749596), (57, 1381260), (60, 1312197), (76, 1035945), (90, 874798), (95, 828756), (114, 690630), (171, 460420), (180, 437399), (190, 414378), (228, 345315), (285, 276252), (342, 230210), (380, 207189), (570, 138126), (684, 115105), (855, 92084), (1140, 69063), (1710, 46042), (3420, 23021)]