7321720

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{331}}^1$

素因数の和:428

約数の個数: 64

約数和(自身を含む): 19123200

約数和(自身を除く): 11801480

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 79, 140, 158, 280, 316, 331, 395, 553, 632, 662, 790, 1106, 1324, 1580, 1655, 2212, 2317, 2648, 2765, 3160, 3310, 4424, 4634, 5530, 6620, 9268, 11060, 11585, 13240, 18536, 22120, 23170, 26149, 46340, 52298, 92680, 104596, 130745, 183043, 209192, 261490, 366086, 522980, 732172, 915215, 1045960, 1464344, 1830430, 3660860, 7321720]

約数ペア:

[(1, 7321720), (2, 3660860), (4, 1830430), (5, 1464344), (7, 1045960), (8, 915215), (10, 732172), (14, 522980), (20, 366086), (28, 261490), (35, 209192), (40, 183043), (56, 130745), (70, 104596), (79, 92680), (140, 52298), (158, 46340), (280, 26149), (316, 23170), (331, 22120), (395, 18536), (553, 13240), (632, 11585), (662, 11060), (790, 9268), (1106, 6620), (1324, 5530), (1580, 4634), (1655, 4424), (2212, 3310), (2317, 3160), (2648, 2765)]