1680702940

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{557}}^1\times {\mathrm{3079}}^1$

素因数の和:3659

約数の個数: 72

約数和(自身を含む): 4114424160

約数和(自身を除く): 2433721220

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 557, 980, 1114, 2228, 2785, 3079, 3899, 5570, 6158, 7798, 11140, 12316, 15395, 15596, 19495, 21553, 27293, 30790, 38990, 43106, 54586, 61580, 77980, 86212, 107765, 109172, 136465, 150871, 215530, 272930, 301742, 431060, 545860, 603484, 754355, 1508710, 1715003, 3017420, 3430006, 6860012, 8575015, 12005021, 17150030, 24010042, 34300060, 48020084, 60025105, 84035147, 120050210, 168070294, 240100420, 336140588, 420175735, 840351470, 1680702940]

約数ペア:

[(1, 1680702940), (2, 840351470), (4, 420175735), (5, 336140588), (7, 240100420), (10, 168070294), (14, 120050210), (20, 84035147), (28, 60025105), (35, 48020084), (49, 34300060), (70, 24010042), (98, 17150030), (140, 12005021), (196, 8575015), (245, 6860012), (490, 3430006), (557, 3017420), (980, 1715003), (1114, 1508710), (2228, 754355), (2785, 603484), (3079, 545860), (3899, 431060), (5570, 301742), (6158, 272930), (7798, 215530), (11140, 150871), (12316, 136465), (15395, 109172), (15596, 107765), (19495, 86212), (21553, 77980), (27293, 61580), (30790, 54586), (38990, 43106)]