19818240

素因数分解:

$2^8\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{397}}^1$

素因数の和:434

約数の個数: 144

約数和(自身を含む): 68335008

約数和(自身を除く): 48516768

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 32, 39, 40, 48, 52, 60, 64, 65, 78, 80, 96, 104, 120, 128, 130, 156, 160, 192, 195, 208, 240, 256, 260, 312, 320, 384, 390, 397, 416, 480, 520, 624, 640, 768, 780, 794, 832, 960, 1040, 1191, 1248, 1280, 1560, 1588, 1664, 1920, 1985, 2080, 2382, 2496, 3120, 3176, 3328, 3840, 3970, 4160, 4764, 4992, 5161, 5955, 6240, 6352, 7940, 8320, 9528, 9984, 10322, 11910, 12480, 12704, 15483, 15880, 16640, 19056, 20644, 23820, 24960, 25408, 25805, 30966, 31760, 38112, 41288, 47640, 49920, 50816, 51610, 61932, 63520, 76224, 77415, 82576, 95280, 101632, 103220, 123864, 127040, 152448, 154830, 165152, 190560, 206440, 247728, 254080, 304896, 309660, 330304, 381120, 412880, 495456, 508160, 619320, 660608, 762240, 825760, 990912, 1238640, 1321216, 1524480, 1651520, 1981824, 2477280, 3303040, 3963648, 4954560, 6606080, 9909120, 19818240]

約数ペア:

[(1, 19818240), (2, 9909120), (3, 6606080), (4, 4954560), (5, 3963648), (6, 3303040), (8, 2477280), (10, 1981824), (12, 1651520), (13, 1524480), (15, 1321216), (16, 1238640), (20, 990912), (24, 825760), (26, 762240), (30, 660608), (32, 619320), (39, 508160), (40, 495456), (48, 412880), (52, 381120), (60, 330304), (64, 309660), (65, 304896), (78, 254080), (80, 247728), (96, 206440), (104, 190560), (120, 165152), (128, 154830), (130, 152448), (156, 127040), (160, 123864), (192, 103220), (195, 101632), (208, 95280), (240, 82576), (256, 77415), (260, 76224), (312, 63520), (320, 61932), (384, 51610), (390, 50816), (397, 49920), (416, 47640), (480, 41288), (520, 38112), (624, 31760), (640, 30966), (768, 25805), (780, 25408), (794, 24960), (832, 23820), (960, 20644), (1040, 19056), (1191, 16640), (1248, 15880), (1280, 15483), (1560, 12704), (1588, 12480), (1664, 11910), (1920, 10322), (1985, 9984), (2080, 9528), (2382, 8320), (2496, 7940), (3120, 6352), (3176, 6240), (3328, 5955), (3840, 5161), (3970, 4992), (4160, 4764)]