20381300

素因数分解:

$2^2\times 5^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{631}}^1$

素因数の和:681

約数の個数: 72

約数和(自身を含む): 49371840

約数和(自身を除く): 28990540

約数列:

[1, 2, 4, 5, 10, 17, 19, 20, 25, 34, 38, 50, 68, 76, 85, 95, 100, 170, 190, 323, 340, 380, 425, 475, 631, 646, 850, 950, 1262, 1292, 1615, 1700, 1900, 2524, 3155, 3230, 6310, 6460, 8075, 10727, 11989, 12620, 15775, 16150, 21454, 23978, 31550, 32300, 42908, 47956, 53635, 59945, 63100, 107270, 119890, 203813, 214540, 239780, 268175, 299725, 407626, 536350, 599450, 815252, 1019065, 1072700, 1198900, 2038130, 4076260, 5095325, 10190650, 20381300]

約数ペア:

[(1, 20381300), (2, 10190650), (4, 5095325), (5, 4076260), (10, 2038130), (17, 1198900), (19, 1072700), (20, 1019065), (25, 815252), (34, 599450), (38, 536350), (50, 407626), (68, 299725), (76, 268175), (85, 239780), (95, 214540), (100, 203813), (170, 119890), (190, 107270), (323, 63100), (340, 59945), (380, 53635), (425, 47956), (475, 42908), (631, 32300), (646, 31550), (850, 23978), (950, 21454), (1262, 16150), (1292, 15775), (1615, 12620), (1700, 11989), (1900, 10727), (2524, 8075), (3155, 6460), (3230, 6310)]