398511320

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{181}}^1\times {\mathrm{2897}}^1$

素因数の和:3108

約数の個数: 64

約数和(自身を含む): 949384800

約数和(自身を除く): 550873480

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 181, 190, 362, 380, 724, 760, 905, 1448, 1810, 2897, 3439, 3620, 5794, 6878, 7240, 11588, 13756, 14485, 17195, 23176, 27512, 28970, 34390, 55043, 57940, 68780, 110086, 115880, 137560, 220172, 275215, 440344, 524357, 550430, 1048714, 1100860, 2097428, 2201720, 2621785, 4194856, 5243570, 9962783, 10487140, 19925566, 20974280, 39851132, 49813915, 79702264, 99627830, 199255660, 398511320]

約数ペア:

[(1, 398511320), (2, 199255660), (4, 99627830), (5, 79702264), (8, 49813915), (10, 39851132), (19, 20974280), (20, 19925566), (38, 10487140), (40, 9962783), (76, 5243570), (95, 4194856), (152, 2621785), (181, 2201720), (190, 2097428), (362, 1100860), (380, 1048714), (724, 550430), (760, 524357), (905, 440344), (1448, 275215), (1810, 220172), (2897, 137560), (3439, 115880), (3620, 110086), (5794, 68780), (6878, 57940), (7240, 55043), (11588, 34390), (13756, 28970), (14485, 27512), (17195, 23176)]